19．The temperature will fall sharply the day after tomorrow，when a snowstorm ______ to
strike this area．（　�。�
A．expectsB．is expected
C．has expectedD．will be expected

分析 后天氣溫將急劇下降，那時(shí)預(yù)計(jì)會(huì)有一場(chǎng)暴風(fēng)雪席卷該地區(qū)．

解答 答案：B
根據(jù)句意以及when之前的逗號(hào)可知，本句是非限定性的定語(yǔ)從句；由于主句使用了一般將來(lái)時(shí)可知，此處由關(guān)系副詞when引導(dǎo)的從句應(yīng)使用一般現(xiàn)在時(shí)表示將來(lái)；由于動(dòng)詞expect與從句中的主語(yǔ) a snowstorm 構(gòu)成被動(dòng)關(guān)系，因此空缺處應(yīng)使用一般現(xiàn)在時(shí)態(tài)的被動(dòng)語(yǔ)態(tài)；故選B

點(diǎn)評(píng) 本題考查了一般現(xiàn)在時(shí)態(tài)的被動(dòng)語(yǔ)態(tài)的用法．做本題時(shí)，首先應(yīng)知道：在狀語(yǔ)或定語(yǔ)從句中，當(dāng)主句使用了一般將來(lái)時(shí)，從句應(yīng)使用一般現(xiàn)在時(shí)表示將來(lái)；其次應(yīng)注意分析主語(yǔ)與謂語(yǔ)動(dòng)詞是否構(gòu)成被動(dòng)關(guān)系，從確定句子應(yīng)使用的語(yǔ)態(tài)．

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